Waste treatment equipment

Abstract

The present invention relates to waste treatment equipment. The purpose of the present invention is to solve the following technical problem that: under the following conditions, the operating safety of cement manufacturing equipment (200) is ensured, wherein the conditions comprise: thermal decomposition gas generated by a gasifier (1) is conveyed to a decomposition furnace (20) of the cement manufacturing equipment (200) under the condition of maintenance of the constant carbon content and the constant ash content in the thermal decomposition gas, and the like. The technical scheme of the present invention is that: waste treatment equipment (100) is arranged close to the cement manufacturing equipment (200). The waste treatment equipment comprises: the gasifier (1) and a gas conveying pipeline (6), wherein the gasifier is provided for carrying out the gasification reaction for the waste to generate the thermal decomposition gas, and the gas conveying pipeline is provided for conveying the generated thermal decomposition gas to the decomposition furnace (20) under the condition of the constant carbon content and the constant ash content in the thermal decomposition gas. According to the present invention, a flow ratio of the thermal decomposition gas from the gasifier (1) to the discharged waste gas from the decomposition furnace (20) is limited below the specified flow ratio, such that the temperature change of the decomposition furnace (20) can be inhibited so as to ensure the stability of the cement manufacturing equipment during the operating process.

Description

technical field [0001] The present invention relates to a waste treatment facility for sanitation treatment of waste by using a cement decomposition furnace installed adjacent to a cement manufacturing facility. Background technique [0002] In recent years, even in developing countries, for example, with the improvement of living standards, there is an increasing need for sanitary treatment of garbage, and the increase in the amount of incineration treatment is also expected, but there are also general construction garbage The incinerator requires a large cost and requires a long construction period. In addition, it is necessary to evaluate the impact of the incinerator on the surrounding environment and disclose information to nearby residents, so it takes a long time to prepare before the start of construction. Furthermore, in Japan there is still a shortage of landfill sites for burying the ashes generated by incinerators. In the case of establishing a new waste disposa...

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Problems solved by technology

[0004] That is to say, in the above prior art example, the pyrolysis gas generated by the gasifier can be used as part of the fuel gas, and carbon and ash can be used as cement raw materials at the same time, but the two must be separated, and another The system is provided to cement manufacturing equipment, so there are difficulties in complicated systems

[0005] In addition, the calorific value of waste is usually about 1000-3000 kcal / kg, which is lower than that of the fuel usually used in cement kilns (in the case of using medium, the calorific value of low-grade medium is 5000-7000 kcal / kg). , so when the pyrolysis gas from garbage is used together, the temperature in the kiln is low, and the fuel consumption may be unsatisfactory.

[0006] Moreover, the water vapor contained in the pyrolysis gas from garbage may have adverse effects on the properties of cement clinker, and when the pyrolysis gas is burned in a cement kiln, hot spots may occur to form deposits

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